x = 2y-1
sqrt(x) +sqrt(y) = sqrt(2y-1) +sqrt(y) = 2
sqrt(2y-1) = 2 - sqrt(y), и 1/2<= y <= 5/2. Возводим в квадрат</p>
2y-1 =4 -4sqrt(y) +y
y +4sqrt(y) -5 =0. Пусть t =sqrt(y), t>=0
t^2 +4t -5 =0
(t+5)(t-1)=0 => t =-5 и t=1 но t>=0 значит t=1
t=sqrt(y) = 1 => y = 1^2 = 1 => x = 2y-1 =2*1 - 1 = 1
Ответ (1;1)